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(No Model.)

G. H. DOUGHERTY.

LEAD PENCIL.

No.269,'778. Patented Dec.26, 1882.

a li/iesi: Q 17111671207,

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NITED STATES GEORGEII. DOUGHERTY, ()F JERSEY CITY, NEW JERSEY, ASSIGNOR TO EDWARD F. C. YOUNG, RECEIVER, 0F SAME PLACE.

LEAD-PENCIL.

SPECIFICATION forming part of Letters Patent No. 269,778, dated December 26, 1882.

Application filed November 4, 1882. (No model.)

To all whom it may concern Be it known that I, GEORGE H. DOUGH- ERTY, a citizen of the United States, residing in the city of Jersey City, county of Hudson, and State of New Jersey, have invented certain new and useful Improvements in Lead- Pencils, fully described and represented in the lollowing specification and the accompanying drawings, for thing apart of the same.

This invention relates to that class of leadpencils which are provided with permanentlyattached erasers, and particularly to apencil ot' the character shown and described in Letters Patent No. 192,902. It will be observed that in the structure shown in said Letters Patent the eraser, which consists of a hat block of rubber, is seated in a slot or recess in the end of the pencil, which slot extends entirely across the pencil, so that its walls afl'ord lateral support for the eraser in two directions only. From this construction it results that the retention of the eraser in its scat against pressure in the other two directions (which directionsare the ones in which the pressure is almost always applied in use) is made to depend wholly upon the strength of the glue or other cement with which it is secured to the walls of the slot. In using pencils thus constructed itfrequently happens that this glue is not sufficient for the purpose and that the eraser becomes detached from its seat, and thus rendered useless before the pencil is consumed.

It is the object of the present invention to cure this defect and to produce a structure in which the eraser shall be provided with lateral support in all directions, so that the glue which secures it to the walls of its seat will be relieved from all strain.

To that end the invention consists in certain details of construction, which will now be fully explained and particularly pointed out.

In the accompanying drawings, Figure 1 is an elevation of a pencil embodying the invention. Fig.2 is an elevation taken at right angles to Fig. 1, and Fig. 3 is a cross-section of the eraser and walls of its seat.

The body A of the pencil is of any of the usual forms, it being provided at one end with a slot or'recess, B, which extends entirely across the body, and is of suitable depth to receive an eraser of the desired length.

v The eraser 0 consists of a flat block or slab of rubber seafed iu the slot 13, and secured therein by means of glue or other appropriate cement, said block being of such width that its edges 0 project beyond the sides of the pencil. In the structure shown in the Letters Patent referred to these projecting edges were of the same thickness as the remainder of the block 0, from which it resulted that when, in using the eraser, pressure was applied in the direction of the width of the block 0 there was nothing to resist said pressure ex,- cept the glue between the block and the walls I) of its seat. This, as before stated, was frequently insufficient for the purpose, allowing the block to become detached and useless before the pencil was exhausted. To prevent this the projecting edges 0 of the block are in the present case provided with lateral flanges or projections c, which, when the eraser is in its seat, rest against the edges of the walls I), and afford a lateral support for the block 0, which will relieve the glue from all strain when pressure is applied to the rubber in the direction ofits width.

Although it is preferable that the edges 0 of the eraser should be rounded and that the edges of the walls I) should be flattened where they come in contact with the projections e, as shown, yet these features are not necessary. The edges 0 may be angular, and walls may be allowed to remain in the original form.

What I claim is-- The herein-described pencil, consisting of the body A. provided with the slot B, in which is seated the eraser 0, having the projecting edges 0 and the lateral projections e, substantial] y as described. 7

In testimony whe'reot'I have hereunto setmy hand in the presence of two subscribing witnesses.

GEORGE H.1JOUGHERTY.

Witnesses ALBERT F. SoHLEeEL, ADOLPH So LEeEL. 

